| 摘要 |
PURPOSE:To attain the sequence control for make and break of a power supply with plural devices by combining on-delay timers, off-delay timers and relays. CONSTITUTION:When a power supply switch is made, each contact of off-delay timers OFFT-1-3 is closed. Then an on-delay timer ONT-1 works for a prescribed period of time to close its contact. Thus a relay RL-1 works to close its contact, and therefore a power supply is supplied to a device 2. Then a timer ONT-2 works after a prescribed period of time, and a relay RL-2 works to apply a power supply to a device 3 in the same way. Then a power supply is applied to a device 4. When a switch SW is broken, the power supplies are sequentially broken at and after the device 4 by the functions of timers OFFT. In such a way, the sequence control is possible for make and break of a power supply with plural devices. |
